Practice with Functions!!!

Function Operations

100

h(x) = 3x + 3 

g(x) = −4x + 1 

Find (h + g)(x)

-x + 4

200

f (x) = 4x − 3 

g(x) = x³ + 2x 

Find ( f − g)(x)

-x³ + 2x - 3

300

g(a) = 3a + 2 

f (a) = 2a − 4 

Find ( g / f ) (a)

(3a + 2)/(2a - 3)

400

g(a) = 2a − 1 

h(a) = 3a − 3 

Find (g ⋅ h)(a)

6a² - 9a + 3

500

g(n) = n² + 4 + 2n 

h(n) = −3n + 2 

Find (g ⋅ h)(n)

-3n³ - 4n² - 8n + 8

Values of Functions

100

g(x) = 2x − 5 

h(x) = 4x + 5 

Find (g − h)(3)

-16

200

g(t) = t² + 3 

h(t) = 4t − 3 

Find (g ⋅ h)(−1)

-28

300

g(x) = −x² − 1 − 2x 

f (x) = x + 5 

Find (g − f )(3)

-24

400

f (x) = 3x − 1 

g(x) = x² − x 

Find ( f / g ) (4)

11/12

500

g(a) = 2a − 1 

h(a) = 3a − 3 

Find (g ⋅ h)(−4)

135

Function Composition

100

g(x) = 2x − 2 

f (x) = x² + 3x 

Find (g o f )(x)

2x² + 6x - 2

200

g(x) = 2x − 2 

f (x) = x² + 3x 

Find (f o g )(x)

4x² - 2x - 2

300

h(x) = x² − 2 

g(x) = 4x + 1 

Find (h o g)(x)

16x² + 8x - 1

400

h(x) = x² − 2 

g(x) = 4x + 1 

Find (g o h)(x)

4x² - 7

500

f (x) = 2x³ − 5x² 

g(x) = 2x − 1 

Find ( f o g)(x)

16x³ - 44x² + 32x - 7

Function Composition

100

h(n) = 4n + 5 

g(n) = 3n + 4 

Find (h o g)(n)

12n + 21

200

h(n) = 4n + 5 

g(n) = 3n + 4 

Find (g o h)(n)

12n + 19

300

f (x) = 2x³ − 5x² 

g(x) = 2x − 1 

Find ( g o f)(x)

4x³ - 10x² - 1

400

g(n) = 3n + 2 

f (n) = 2n² + 5 

Find g( f (x))

6n² + 17

500

g(n) = 3n + 2 

f (n) = 2n² + 5 

Find f ( g (x))

18n² + 24n + 13

Random

100

Should I let people do test corrections? 

i dunno

200

When does the marking period end? 

March 30th (I think)

300

When is the quiz on this?

Monday :)

400

When is St. Patrick's Day? 

March 17th

500

Did I go home and cry after grading your tests? 

No, but I could have